1-2p=-3+2(1+r)

Solution for 1-2p=-3+2(1+r) equation:

Simplifying
1 + -2p = -3 + 2(1 + r)
1 + -2p = -3 + (1 * 2 + r * 2)
1 + -2p = -3 + (2 + 2r)

Combine like terms: -3 + 2 = -1
1 + -2p = -1 + 2r

Solving
1 + -2p = -1 + 2r

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + -2p = -1 + -1 + 2r

Combine like terms: 1 + -1 = 0
0 + -2p = -1 + -1 + 2r
-2p = -1 + -1 + 2r

Combine like terms: -1 + -1 = -2
-2p = -2 + 2r

Divide each side by '-2'.
p = 1 + -1r

Simplifying
p = 1 + -1r